If you are looking to jailbreak your iPhone you should be aware that there are numerous software options to do so and this article helps point you in the right direction. This is a must read for anyone looking to jailbreak 2.0.2. I've always stayed away from Ziphone and have chosen to use the Dev Teams software {currently QuickPWN} for numerous reasons. This article will help point out those reasons.
Linux on the iPhone: Similarities and Differences between QuickPwn and ZiPhone
Linux on the iPhone: Similarities and Differences between QuickPwn and ZiPhone